Confusion about Entropy
We can’t understand the second law until we know what entropy is. Mathematical formulas precisely define entropy, but hardly anyone can understand them without scientific training. A very well-guarded secret is that many people with scientific training, even those with doctorates in physics and chemistry, don’t understand entropy either. Here are a few points about the little-understood concept of entropy, all derived from physics. We will also identify several concepts that people often confuse with entropy.